1.breaks down complex molecules
2.<span>permeates cell membranes
3.</span><span>support high oxygen concentrations</span>
Answer:
physical changes only change the appearance of a substance
chemical changes cause a substance to change into an entirely substance with a new chemical formula.
Explanation:
physical change: breaking a glass and chopping wood.
chemical change:food cooking and temperature change
The answer is B. The membrane surrounding the nucleus. I'm an Honors student in bio. And this is really easy for me tooo.
Answer:
if there is no cell ,no biological processes to take place. hence ,we wouldn't be able to live.